14 posts tagged with "attestations"

Every 6.4 minutes, Ethereum's consensus clients have a problem. At the boundary between epochs, they need to do expensive work — update validator balances, compute committee assignments, tick the justification/finalization machinery. While they're doing it, the network doesn't stop. Blocks keep arriving. Attesters keep committing to what they see.

What happens to validators whose client is still mid-computation when the attestation window opens? They vote for the wrong head.

One validator missing an attestation isn't a crisis. A few hundred validators missing 1 in 8 attestations, every slot, for three months straight — that's a different story. And it's concentrated in a way that the aggregate participation numbers don't show.

The xatu dataset tracks missed attestations at the entity level. When you sort by miss rate, a clear hierarchy emerges — and a handful of operators sit far outside the expected range.

When a validator is chosen to propose a block, it has a choice: publish the moment the block is ready, or wait for MEV-Boost bids to arrive and raise the payout. Most discussions frame this as a binary — you either participate in the timing game or you don't.

The data says it's more complicated. There are three distinct groups, and the middle one has mostly gone unnoticed.

Analyzing 24 hours of mainnet data: 72.5% of attestations are included in the next slot (optimal), but 27.5% are delayed. These delayed attestations earn reduced rewards.